Not sure I get the praise for THINFS. It's exactly the same performance as in Ellen with Jon bailing on the same notes in the chorus and only singing the easy parts. I guess the backup vocals are a bit louder here than on Ellen, so that's why it's better? Anyway, it's just acoustics/mixing, the performance itself is identical.

On the other hand, Who Says was quite decent and sounded like 2013, unlike the London or Microsoft show.